Permutation lock



March 24, 1925. 1,530,861 H. S. STANDEN PERMUTATION LocK Filed March 20,1925 Patented Marr24, 1925. y 'y N `Ulsurrzn STATES N ,l 1,530,861PATENT. i oFFlcE.

`HENRY sNoWDoN s'rANDEN, or WAVERLEY, NEAR. SYDNEY, New] SOUTH warns,

` AUSTRALIA.

` PERMUTATION LOCK.

To all 'whom it may cof/wem.' y

Be it known that HENRY SNowDoN S'rAn- DEN, a subjectof the King oflGrreat Britain and Ireland, residing at Rocklands, Gross Street,Waverley, near Sydney, New South ValeS, Commonwealth of Australia, hasinvented certain new and useful Permutation Locks, of which thefollowing is aspecification. y

This invention relates to a `permutation lock for doors and the like orfor other arti cles or structures which areto be locked toprevent'access thereto or in connection therewith unless the lock hasbeen previously set to permit a key to be turned therein to move a latchor bolt from engagement with a locking plate or staple or otherrestraining means. Y

The invention has reference particularly to that type of lock which isprovided with a series of buttons, two or more of which may be made toform a combination, toenable a key to be turned when the correct buttonsof a required combination have been set in proper position. i

Referring to the accompanying drawing, Fig. 1 isa perspective view ofthe lock, Fig. 9. afront elevation partly in section, Fig. 3 aIsectional elevation, Fig. 4 a rear elevation;

and Fig. 5 a sectional elevation with the keyk turnedinthe lock and thefront plate there of partlyremoved from the casing.`

A casingB of metal is preferably provided adapted to be secured to thefront of a door or `the like by meansof the bolts 1 and nuts 2. Theheads of the bolts l1 lie in depressions in the casing 8, the latteralsocarrying the plate l to which mayy bedetachably secured by means of theremovable screws 5 the front plate 7; The plate 4 maybe affixed to thecasing 3 by nibs- 8 closed over openings in the rim flange 9 ofthecasing 3. In the .plate 4t is an opening to receive a rotatable barrel6, and `in the rear wall' of the casing 3 is an opening to receive aslidable rotatable barrel 10. Flanges 12 may be'formed on the plate 1 toserve as bearings for the barrel 6.

Circular holes are provided inthe plates 4- and 7 to enable the key 11to be turned therein. f

Slidably attached to the key 11 withinthe casing 3 are the push plate13, `the stop plate 14, the latter having a series of notches 15 in itsperiphery; and externally of the` front niet@ 7 .Qi the ,casing 3 iste@awe' Plat@ 16 f the key 11 maybe turned.

which is attached to the key 11 to be rotated therewith. Thebarrel G isalso attached to ythe key 11 and is rotatable therewith and is slidablelongitudinally thereon when the key Vis ,moved longitudinally. In therear wall the casing 3-are a lseries of rectangular holes to receive thereduced stems 17 of the buttons 18 also a central opening in which Eachof these lbuttons is furnished with two slots L or grooves ened centralportion of the buttons, and portion of the stems 17 of thesaid buttonsis formed rectangular whilst their extreme rear end is circular. Holesarey also furnished in the `plates 4f and 7 for the buttons 18 g. theforward portion of each of the latter y disposedin the preferably,thick-il rectangular portions of their stems 17 lie in the rectangularholes in the rear wall of the casing 3 when the buttons 18 are in eithernormal or aligned position (Fig. 1) with their forward ends projectingan approximately equal distance beyond the front plate 7, or when theylare depressed.

Secured to the side walls of are a series of leaf springs 19, one foreach of the buttons 18; these springs bear against the sides ofthebuttons 18 and serve toA keep them in proper position within the casing.When the front plate` 7 is securely fastened'to the `plate 4 by means ofthe yscrews 5 it isynot; possible to turn the n buttons 18 as therectangular portion of their stems 17 are then within the rectangularholes inthe rear wall of the casing 3., lf, however, the front plate 7is partly removed from'the casing 3 (see Fig. 5), by loosening thescrews 5, the circular portion lof the extreme rear end of the stems 17may `be made to lie'in the said holes in the rear wall o-f the casing 3,and the buttons 18 may i then be turned-as desired. i

Located between theplates 13 and 14 on the key 11 is the coil spring'QOwhich serves to distance said plates from each other, as

y I Ve0 thecasing well as to return `such plates and` the key 11 y tonormal position after the said spring has been contracted by pulling onthesaidkey and such vpulling force has been relaxed. The push plate 13is slidably disposed onthe rear portion of the key 11 yWhereas the stopplate 14 is slidably disposed on theforward 4,portion of` saidkey. Whenany oneor more lf'the but-tens .1.8 have heen, depressed they 7l whereby`the push plate 13 is moved forwardly of the casing 3 and in suchmovement engages the depressed buttons 18 and moves them to normalposition. In such movement L serve to secure the plate r of the key 11the latter slides in the barrel 6,

and such barrel bears on the flanges 12 whenvv the key 11 is rotated,and itv rotates therewith.` The cover plate 16 attached tothe key 11 isturned when said key is turned, but when said plate is in normalposition (Figs. 2 and it coversthe screws 5 which to the plate 4 Qandsuch screws cannot y.be removed from either fthe vplate 'T or the plate4 untilthe key 11 has been turned (Fig. 5), whereby the screws 5 areuncovered by the turning of the plate 16 with the key 11.

` The object of providing the buttons'18 with slots or grooves is toenable the said slots or grooves of any two or more said buttons forminga combination of any particular selection to lbe brought into register(by depressing the buttons 18 forming the combination) with the notchedperiphery of the stop plate 14 whereby the key 11 carrying said plateVmay then be turned ther with. In case, h-owevergthe sto-p plate 14 lisnotin register with the slots or grooves in the correct buttons 18 ofthe combination the key 11 or the stop plate 14 cannot be turned as thesolid portions of' such buttons would engage the notches 15 of the stopplate 14 and rotation of the latter and the key 11 is prevented.Pivotally attached to the key 11 is the tongueor spindle 21 whichprojects from the key 11 and extends into the casing of the lockcarrying the securing bolt or other catch which is to be operated tofree it from engagement with a. staple or locking plate or otherrestrainingymeans y when the key 11 is turned.

In operation, assuming that the permutation lock is fitted with tenVbuttons 18 (Fig. 1), and that the buttons marked b, c and e are to formthe desired combination, the said buttons must first be depressed tobring' the slots or grooves therein into register with the notchedperiphery of the stop plate 14 before the key 11 can be turned tooperate the tongue 21 to release the boltjor latch from the lockingmeans .therefor onthe door or other structure. Should anv of the otherbuttons 18 (Fig. 1) be depressed the slots or grooves therein would notbe brought into register with the notched periphery vof the fstop `plate1 4, consequently such plate could not be rotated andlit would not bevpossible to turn the key 11.

Alteration" of any previously selected buttons 18 forming a particularcombination maybe effectedto Jformany other desired combination byturn'ingthe key 11 (Fig. 5)

'to register with the notched periphery of the plate 14, when the saidselected buttons have been depressed. Turning of the buttons is effectedby moving them outwardly from the casing 3 so that the circular portionof' their extreme rear end may lie in the `rectangular openings in therear of said casing'. y

A A turning-knob provided with ya project, ing stem, vserving thepurpose of the stem 'of the key 11, may besubstituted for the latter.``In the drawings the tongue 21 is shown attached to the key 11 through aslot y22 in the rear portion of the key; such key 4cannot be removedjfrom the casing 3 whilst said tongue is attached thereto, but if thetongue 21 is detached from the key 11, the latter may then be withdrawnfrom the said casing'. Upon deta'ching'the key 11 from the tongue 21 the-barrel 10 may be 'detached from the said `key and lthe latter may thenbe withdrawn by sliding it longitudinally through the slots providedtherefor in the plates 13 and 14 kand the barrel' and the 95 circularholes in the front` plates 4 and 7. The plates 13 and 14'and barrel 6lremain in position in the casing 3 when the key 11 is withdrawn,through the action of the spring 205 and said key may thus be readilyreinserted in place infsaid casing when desired. Notches 23 may beprovided in the ends ofthe Abolts 1 Vto enable such bolts to be heldstationary whilst tthe'nuts 2 are being' secured thereon.

IVhat I claim as my invention and desire to secure by Letters APatentis 1. A permutation lock comprising a casing, aslidable rotatable barrelin said casing, a key attached to said barrel and mov. 11o abletherewith, av-barrel bearing attached to said key and rotatabletherewith in which said'key is movable longitudinally,4 a stop platehaving a notched periphery slidable on said key and rotatable therewith,a push 115 plate slidable on said `key and rotatable therewith, springmeans associated with said key yand plates to distancefthem apart and toallow-return of saidkey to normal. positio-n, means for securing saidlock to a struc- 12o l ture, meansassociatedwith said key yto operate-asecuring bolt when said key is turned,

and fitted to' said casing a series of 4press said stop plate to orm acombination to permitjsaid key to be turned when said com- "binationbuttons are depressed. j

' 2. A permutationlockncomprising acas- 130 ing, a barrel fitting therear of said-casing and rotatable and slidable therein, a bear-` Y ingbarrel at the forward part of said cas- V ably secured, means fitting`the rear wall of the casing to enable the latter to be attached to astructure, a key to which said barrels lare attached. one of saidbarrels being movable therewith and the other being adapted to allowlongitudinal movement 'of-v said key therein as well as to rotate withsaid keyA a tongue pivotally attached to the rear end of said key androtatable therewith adapted to operate a securing bolt when said key isturned, a cover` plate secured to said key adapted to f prevent removalof said lfro-nt plate from said casing unless said key is turned fromnormal position, a stop plate having` a notched periphery secured to andslidable on said key, a series of press buttons disposed in said casinghaving reduced stems at the rear endand slots in their in-l termediateportion, said slots being adapted to be brought into register withsaidstop plates, as required to form a combination with any two or more ofsuch buttonswhen the latter are depressed to permit said vkey to beturned, a series of springs secured to said casing, one for each saidbuttons, a push plate slidablysecured to said key and adapted to returnsaid buttons to normal position after depression `thereof when said keyis moved longitudinally.y anda spring associated with said key adaptedto distance said latter plate and stopplatefrom each other and to permitsaid key barrel fitting the rear of saidcasing, and said push plate tohe returned to normal position after longitudinal movement thereof.

3. In a permutation, lock having a casing to which is 'fitted a seriesof depressihle buttons with intermediateA portions thereof provided withslots, the combination of a key, a rotatable and slidable barrel,affixed to said-key, abearing barrel on said key and rotatableAtherewith adapted to permit longitudinal movement of 'said key therein,a plate secured on said key, a. plate slidably secured to said key andnotched on its periphery, a' tongue p'ivotally attached to said keyadapted when said key is turned to operate a securing bolt, and -aspring disposedbetwe'en said plates adapted to distance them apart andto enable return of said rotatable and slidable barrel, key,v

and push plate to normal position.

4. A permutation lock comprising in combination a casing, a series ofdepress'- ible buttons with intermediate portions thereof furnished withslots, a key, a plate notched on its periphery non-rotatably mounted onsaid key and adapted to cooperate with ,said buttons so that it may herotated relatively thereto when the buttons are adjusted so that theslots therein register with said plate, means whereby said buttons are.normally held from rotating, means whereby a semi-rotation of suchbut-y tons varies the co-mbination of the lock, and means operable fromYoutside the lockvcasing whereby said buttons may be rotated to veffectsuch .variation in the combination.

5. A permutation lock comprising in combination a casing, a series ofdepressible buttons each being furnished with two slots such slotsbeingsituated on opposite sides of said buttons and at different distancesfrom the ends thereof, akey, a plate notched on its peripherynon-rotatably mounted on said key and adapted to cooperate with saidbuttons so that it may berotated.: relatively thereto when. the buttonsare adjusted so that Vthe slots therein register" with saidy plate,means for normally preventing rotation of the buttons and meansfoperablefrom outside the lock casing whereby said buttons may be rotated so thatone or other of said slots in each of said buttons maybe positioned tocooperate with said notched plate so that the combinationof said lockmay be varied. f f

6. A permutation lock comprising in combination a casing, a series ofdepress ible buttonsv with yintermediate portions thereof furnished withslots, a leaf spring associated with each button and adapted tofrictionally engage such buttons so as to maintain theml inthe positionsin which on its periphery non-rotatably mounted on said key and adaptedto .cooperate with said buttons so that it may be rotated relativelythereto when the buttons are adjusted so that the slots therein registerwith said plate, and means whereby said buttons are reversible so as Atovary the combination of said lock.` n

7, A permutation lock comprisingin combination a casing, a series ofdepressible buttons each ybeing furnishedwith two' slots such slotsbeing situated on opposite sides of said buttons and at differentdistances from the ends thereof, a key, 'a plate notched on itsperiphery non-rotatably mounted on said keyand adapted to cooperate withsaid buttons fso that it may be rotated relatively thereto when thebuttons are adjusted so that the slots therein register with said tonsadapted' to engage within square holes located withintherear wall ofsaidcasing .such stems being cylindrical "at their explate, stems on therear ends of sai'dbut buttons may be positioned so that the cylindricalportions of their stems engage in said openings whereby. such buttonsmay be reversed so that one or other of said slots in each of saidbuttons may be positioned to cooperate with said notched plate so thatthe combination oi: `said lock may be varied.

S. A permutation lock comprising in conibination a casing, a series ofdepressible buttons each being furnished with two slots such slots beingsituated on opposite sides of said buttons and at different distancesfrom the ends thereof, a key, a plate notched on n its peripherynon-rotatably mounted on said'V key and adapted to cooperate with saidbuttons so that it may be rotated relatively thereto -when the buttonsare adjusted .so that the slots therein register with said plate, stemson the rear ends ot said buttons adapted to engagewithin square holeslocated within the rear wall of said casing such stems V`beingcylindrical at their. extreme rear portions and rectangular ontheirother portions, a plate maintaining said vbuttons with the squareportions oi their stems engaging in said square holes and rmeans wherebysaid plate. may be adjusted relatively to said casing 'to allow oil saidbuttons being moved into such positions that j the cylindrical portionson their stems engage within said openings whereby such buttons may bereversed so that one or other of said slots in each of said buttons maybe positioned to cooperate with said notched plate so that the com-lbination of said lock may bevaried.

9. A permutationlock comprisingln combination a `casing, a series ofdepressible buttons each being furnished vwith two slots such slotsbeing situatedon opposite lsides of said buttons and vat differentdistances from the ends thereof,a key, afplate notched on itsv peripherynon-rotatably mounted on said key and adapted to cooperate withsaidbuttons so that it may be rotated relatively thereto when the buttonsare adjusted so thatV the slots therein register with said plate, stemson the rear ends of said but tons adapted to engage Within'square holesApositions that their cylindrical ends engage of which vis rotatable andslidable therevoperate a securing bolt when said key and moved to itsnon-normal position whereby the aforesaid plate maybe loosened from saidcasing and moved relatively thereto so that said buttons may be movedinto such within saidopenings whereby such buttons may be reversed sothat one or other of said slots in each of said buttons may bepositioned to cooperate with said notched plate so that the combinationof said lock may be varied` 10. In a permutation lock having a casing, afront plate detachably secured to said casing, a key attached to twobarrels one with in said casing, and the other is rotatable with saidkey and permits.longitudinal movement of said keytherein, anda coverplate secured on saidV key and rotatable therewith, the said cover platebeing adapted to prohibit detachment of said 'front plate from saidcasing unless said key is turned from normal position.

l1. In a permutation lock having a casing with tivo rotatable barrelsfitted therein, the. combination of a 4key slottedat its rear endattached to said barrels and rotatable therewith one of said barrelsbeing movable longitudinally with said key and the other barrel being.fadaptedkto permit longitudinal movementvol" said key therein` and atongue pivotally attached to said key through said lslot therein adaptedto tongue are turned. n 95 12.111 a permutation lock, a circular metalcasing, the rear1wall1oii` said casing having openings therein toreceive means whereby said casing may be detachably secured -to -astructure, and a' central'opening 100 in which'the rear end of a key is'turnable, togetherv with a series of rectangular openings surroundingsaid. circular opening; a plate` detachablyvsecurable to the front of isaid casing having a -central lianged open- Aing therein in which a keyis yturnahle and a series of openings .surrounding said cen tralopening; and Va front plate for said casing detachably securable to saidformer plate and casing and 'having a central key 110 -turning openingand a series of openings surrounding saidxcentral opening, all saidopenings registering. with the openings in the said first `mentionedplate.

in testimony whereofl aifix my signature in presence ot two witnesses.f-

vHENRY SNODO'N STANDEN. llitnesses: f

W. J. DAVIS, jETHEL CARROLL.

